Weizsacker, E. V. E. (2005). Factor four: Doubling wealth, haling resource use. Earthscan.
シカゴスタイル引用形Weizsacker, Ernst Von Etc. Factor Four: Doubling Wealth, Haling Resource Use. London: Earthscan, 2005.
MLA引用形式Weizsacker, Ernst Von Etc. Factor Four: Doubling Wealth, Haling Resource Use. Earthscan, 2005.
警告: この引用は必ずしも正確ではありません.